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WASHINGTON J. OORTHELL ANoPHILLIr nionnn'ns, or BOSTON, MASSA- OHUsETTs.-

Letters Patent No. 70,699, dated November'12,.1867.

@ttt Sztsmle wenn tu fr 4time Estima atmt uitrusting ont rt tit rama T0 WHOM IT MAY CON CERN Be it known that we, WASHINGTON J. Comunal. and PnILLIr- RICHARDS, both of Boston, in the State of Massachusetts, huve invented an Improved Door and Window-Fastener and we do hereby declare that the following is afull and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, making a part of this specification, of which-- Figure lis a. top view of .the invention..

Figure 2 is a longitudinal section of the same.

ligure 3 is 'an end view of the same.

'Figure 4 is a. transverse section ofthe same.

The letter a represents the case or chamber, b the bolt, c itsnotch or recess, d the knob, e the shank of -the knob, f a projection o'r stop on the knob; g, vslots in the tcp of thebolt-case, r. the spring below the bolt, and z' the sunken space for' the spring to drop into.

Our invention provides a cheap and safe lock or bolt for doors of all kinds, and also a secure fasteningfor -windows and in order that others may understand the nature and use of'our invention, we will proceed to.

explain the same.

Fig. 2, in the accompanying drawings, clearlyrepresents the di'erent parts of the fastener, and iig. 1 represents the same as in use with the door or window-foot. It is made of anysutable metal.` In g. 1 is seen the outside part of the fastener, with its arms extended, and screw-holes in the arms to'fasten it 4upon the wood."

This covers a box or case, a, seen "in iigs. 2, 3, and 4, and it is designed to sinkthislbox into the wood. ,.Figs.

1 and 2exhbit the slot g, made so that the knob d and its shank e may be moved back and forth at pleasure.

By examining further fig. 2, 'the different parts of the fastener may be clearly explained. The-said knob, with its shank, presses down upon one end of the spring h, and beneath this spring, and iindervthe end ofthe shank, is a space marked z', giving room for the pressure downwards. On one side of the shank is seen a projectionor stop,f. The bolt b hase. notch or recess, e, in the bolt-chamber, the use of which will be explaincdf Suppose the door unbolt'ed: shove forward the bolt by the knob, and turn the knob half way round,'so that the projection fsha'll rest on the side of tlie'slot. It will then be impossible tounbolt the door, and even turning the projection round to its former place, the bolt cannot be pushed back without pressing the knob on the side next the bolt downwards, so that the projection presses into the narrowest-slot. The reason why the bolt cannot be pushed buck is, because the spring h springs up into the recess e, and of' course it cannot be pushed backwards without turning and' pressing the knob in the right direction.

No burglar could push back the-bolt from without, and, unless taught, no one could easily manage it. It will be very convenient to fasten pantry-doors and other doors against the curiosity of children. It will be an excellent window-fastener, for the bolt ,could 'not be slipped back by an inexperienced hand, though a. pane of glass should be removed'. The fastener is simple and easy of construction.

What we claim-as our invention, and desire to secure by Letters Patent, is.-

`The combination and arrangement of the knob and shank d and e, the projectionf, and the spring z, with ythe bolt b, constructed with its recess e moving back and forth in the case a,substantially in the manner and for the purpose above set forth. 'l WASHINGTON J'. CORTHELL,

PHILLIP RIClIARDS.A Witnesses:

J. L. NEWTON, F. H. APPLETON. 

